GENERAL HISTOLOGY

Detailed explanation-1: -somatic sensation Sensations arising from the skin-such as touch, pressure, cold, warmth, and pain-and from the muscles, tendons, and joints-such as the position of the limbs and pain-are known as somatic sensations.

Detailed explanation-2: -There is only one type of sensory receptor cell in the somatosensory system, the Merkel cells, and they are found only in skin. The vast majority of somatosensory receptors are not specialized receptor cells.

Detailed explanation-3: -SI processes both tactile and proprioceptive sensory information. SI is located in the postcentral gyrus of the cerebral cortex and contains four distinct regions, called Brodmann’s areas 3a, 3b, 1, and 2.

Detailed explanation-4: -Sensory receptors exist in all layers of the skin. There are six different types of mechanoreceptors detecting innocuous stimuli in the skin: those around hair follicles, Pacinian corpuscles, Meissner corpuscles, Merkel complexes, Ruffini corpuscles, and C-fiber LTM (low threshold mechanoreceptors).